How to remove a used namespace?

[ruudk]

First of all, thanks for this amazing project.

It's very easy to add uses using $namespace->addUse but it appears to be impossible to remove an imported namespace.

It would be great if it was possible to call $namespace->removeUse('Fully\Qualified');.

Currently I solve the useless imports by running it through PHP CS Fixer, that works. But feels a bit of a work around.